-4.78% is the change from 837 to 797
Calculation steps:
[( 797 - 837 ) ÷ 837] x 100 = -4.78%
Formula
Percentage change = [(797 - 837) / 837] x 100
Subtract the new number by the original number
797 - 837 = -40
-40 ÷ 837 = -0.04778972520908005
-0.04778972520908005 x 100 = -4.78%